Abstract

Respiratory diseases, spanning from the common cold to severe conditions such as pneumonia and COVID-19, pose significant challenges to global health and contribute significantly to morbidity and mortality. The emergence of COVID-19 has heightened the requirement for effective therapeutic strategies. This review article examines the potential of specific medicinal plants, namely Black Cumin, Licorice, and Echinacea, and their phytoconstituents in the treatment of respiratory diseases, with a focus on COVID-19. It synthesizes extant knowledge on the therapeutic efficacy of these plants, which have been used traditionally in Unani, Ayurvedic, and Chinese medicine to alleviate respiratory symptoms and boost immune functions. This review also discusses the immunomodulatory and antiviral properties of these three specific medicinal plants, as well as their function in the treatment of a number of life-threatening diseases. Incorporating insights from ethnomedicine and contemporary scientific research, this review highlights the urgency of exploring herbal medicines as complementary therapies for respiratory diseases and offers perspectives on incorporating these natural remedies into contemporary treatment paradigms, particularly in the fight against COVID-19.

Key words: Medicinal plants, respiratory infections, glycyrrhizin, thymoquinone, phytochemicals, COVID-19.